1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeede82fe0b7a1515fe7fb5d910d0ca4fa4bec2ed790fe15c01a91c5e4cd96164. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a0d45b2-314e-446a-a8f5-4484aea715a6.json and https://artists.proofprofile.net/proofs/artist/6a0d45b2-314e-446a-a8f5-4484aea715a6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cab0dddc5acfc9402f88cfb6a0c4f6d767944aa6d0c084bafee29cc0bf6861. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRS710300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5ecdd4d6542c0e26e82fc0347c1c82197d4fb22c758b8933107e5bd79f9427. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRS710400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8458d68f721b70d482c3e1d8ef6b031ae0901ec7875b3249e437e657ccfad2d0. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRS710400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc315919ea02c5bb4bd140097bef2812c4bc0972a2526d93cce90581e43f48c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRS710400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b92b3ff284727c9553ca7b8ed9d6ac20797b9ad369b42e9335db44042fb61a4. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRS710400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae648bbaef41810f2a085f8a2d8c73841f8a5c60aef1b15b52395268cf03104c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRS710400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa814077477777b4c9c2d9b747cc54c9e12f6dcb1b21b6dc418ab1920368647. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRS710300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1b127a8b1d8c69bd32292553ea724f170d21f13954d7ea527e1bf715b8644c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRS710400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa85b37290e57e35528f8a3ed50a7a4eaccdbe3ed2cc1d38623bda660326c2d5. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR5R00908791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bf988452c26b2d431c1746461bcdaa4f5e9b87154c171dec19bdc2a830992b. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR5R00908792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde745b5a783df6e3490de9424719252f534649542eea1b48f16c428bc6b7fd8. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR5R00908793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962380fd6753e717fc38924dd23e06bd034a28759f6a07cb2a7576f4586ac2b6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR5R00908794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc858a22435417b05b5d80db2f0f81c1abf5f64f388d46ecd6ce12257f1202f. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR5R00908796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f97a7261f4060b766a4569fb3d4c57b277309cdcff8ba37d617882215e5d7a0. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR5R00908797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcbedc4070f263e1903e6ef34f8e5fa54a7adf712c49320e77ea617bbe858c04. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR5R00908798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9523dcc9a7cf783e5f6677bd3ebfc7fa6dd064f1d7c9a0a1deeb8dddf3b586f6. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR5R00908799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e115a4510173986b30a27fa99d2b6b9d37ec51592cb2c6b4859bcd896dcb98f. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W11200593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8ebae535c04f36d950e45a00985f18abde6c35a5fd53900fb33f7e333fcf40. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W11718148.
Les statues (Extrait de la compilation "Le Motel, ma maison")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5bc12a68eeb177e5bae4d9e5b1e46980920adc09fe1e39be03139d9645f8c2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR4EO2200112.